In this Sept. 24, 2018 photo, Mat Beren, owner of the marijuana seed producer The House of the Great Gardener, poses for a photo in front of a poster touting several of the varieties he offers that is displayed in the Warmland Centre, a medical marijuana dispensary in Mill Bay, British Columbia, on Vancouver Island in Canada. Beren, who is also a consultant with the government-licensed pot-growing giant Canopy Growth, is now growing weed in giant greenhouses as Canada prepares to become the second and largest country with a legal national marijuana marketplace on Oct. 17, 2018. (AP Photo/Ted S. Warren)

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In this Sept. 25, 2018, photo, Devin Melnyk, a long-time marijuana grower and a consultant with Pure Sunfarms, holds trimmed marijuana as it comes out of a high-volume cannabis trimming machine at a massive tomato greenhouse being renovated to grow pot in Delta, British Columbia. On Oct. 17, 2018, Canada will become the second and largest country with a legal national marijuana marketplace. (AP Photo/Ted S. Warren)

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In this Sept. 24, 2018, photo, a pin promoting Crop King Seeds, with the colors and maple-leaf logo of the Canadian flag, is displayed on a package of marijuana seeds for sale at the Warmland Centre, a medical marijuana dispensary in Mill Bay, British Columbia, on Vancouver Island in Canada. On Oct. 17, 2018, Canada will become the second and largest country with a legal national marijuana marketplace. (AP Photo/Ted S. Warren)

In this Sept. 25, 2018 photo, a massive tomato greenhouse being renovated to grow marijuana is shown in Delta, British Columbia. The facility is operated by Pure Sunfarms, a joint venture between tomato grower Village Farms International, and a licensed medical marijuana producer, Emerald Health Therapeutics. On Oct. 17, 2018, Canada will become the second and largest country with a legal national marijuana marketplace. (AP Photo/Ted S. Warren)

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In this Sept. 25, 2018, photo, marijuana plants are shown growing in a massive tomato greenhouse being renovated to grow pot in Delta, British Columbia, that is operated by Pure Sunfarms, a joint venture between tomato grower Village Farms International, and a licensed medical marijuana producer, Emerald Health Therapeutics. On Oct. 17, 2018, Canada will become the second and largest country with a legal national marijuana marketplace. (AP Photo/Ted S. Warren)

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In this Sept. 26, 2018, photo, a pedestrian walks past a sign advertising jobs with BC Cannabis Operations in front of the warehouse in Richmond, British Columbia, that will store pot purchased from licensed producers before it is shipped to retail shops and online customers. On Oct. 17, 2018, Canada will become the second and largest country with a legal national marijuana marketplace. (AP Photo/Ted S. Warren)

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In this Sept. 24, 2018, photo, customer Seth McKay, right, talks with manager Ruby Bressan, at the Warmland Centre, a medical marijuana dispensary in Mill Bay, British Columbia, on Vancouver Island, as shop dog Delilah looks on. On Oct. 17, 2018, Canada will become the second and largest country with a legal national marijuana marketplace, forcing many dispensaries, including Warmland, to close temporarily until they receive licenses under the new recreational system. (AP Photo/Ted S. Warren)

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In this Sept. 24, 2018, photo, bud tender Dave Chelli works at the Warmland Centre, a medical marijuana dispensary in Mill Bay, British Columbia, on Vancouver Island. On Oct. 17, 2018, Canada will become the second and largest country with a legal national marijuana marketplace, forcing many dispensaries, including Warmland, to close temporarily until they receive licenses under the new recreational system. (AP Photo/Ted S. Warren)

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In this Sept. 25, 2018, photo, bottles of maple syrup and olive oil infused with CBD marijuana extract are displayed for sale at the Village Bloomery medical cannabis dispensary in Vancouver, British Columbia. On Oct. 17, 2018, Canada will become the second and largest country with a legal national marijuana marketplace. (AP Photo/Ted S. Warren)